CEMS are essential for environmental control in industries. Furthermore, they ensure real-time measurement of pollutant gases, which meets legal requirements and directly contributes to sustainability. Therefore, in this article, we'll understand how they work, the most relevant regulations, and, consequently, the benefits of their implementation.
Historical context and regulations
Concern about atmospheric emissions is not new. For example, as early as 1300, England banned the indiscriminate burning of coal. Over the centuries, especially during the Industrial Revolution, more structured laws emerged, such as the Clean Air Act in the US and environmental directives in the European Union.
In Brazil, legislation on Continuous Emissions Monitoring Systems consists of laws, decrees, and resolutions from Conama (National Environmental Agency), Ibama (Brazilian Institute of Environment and Renewable Natural Resources), and state agencies such as CETESB (National Institute of Environment and Renewable Natural Resources) and FEAM (National Institute of Environment and Renewable Natural Resources). However, the lack of standardization remains a significant challenge. Furthermore, international treaties, such as the Kyoto Protocol, reinforce the country's commitment to reducing greenhouse gas emissions.
Summary legal structure
To be effective, regulations on Continuous Emission Monitoring Systems must first identify the sources and parameters to be measured. Next, they must include technical installation and performance specifications, as well as quality assurance through periodic audits.
In the US and Europe, standards are consolidated and detailed. In Brazil, however, the integration of these standards still needs to advance to ensure oversight and legal certainty. Consequently, this gap affects the reliability of monitoring processes and hinders the standardization of practices.
Main stationary emission sources
The main stationary sources that require continuous monitoring include several industrial processes. Among them, the following stand out:
- Incineration Processes: These involve hazardous industrial waste and landfill gases and are regulated by Directive 2000/76/EC (Europe).
- Combustion Processes: These include industrial furnaces, boilers and incinerators, which must follow specific emission standards.
- Use of Solvents: Chemical and manufacturing industries must comply with specific standards for solvent emissions.
- Gas Turbines: Cogeneration power plants use gas turbines and must follow specific regulations.
Furthermore, the EPA (US) lists approximately 30 stationary sources that require continuous monitoring, including refineries and pulp and paper plants. Thus, it is clear that the scope of CEMS is broad and applicable to various sectors.
Performance specifications for CEMS
International standards, such as European standards and EPA 40CFR60, establish technical requirements for gases such as SO₂, NOx, CO₂, and CO. They also define parameters such as:
- Linearity and sensitivity of sensors;
- Response time and detection limit;
- Influence of pressure and temperature.
These criteria ensure accurate and reliable measurements, increasing the credibility of the data obtained. Therefore, following these specifications is essential to ensure compliance and efficiency.
Management and benefits of CEMS systems
Operational Improvement and Safety
The use of Continuous Emissions Monitoring Systems reduces environmental risks, improves industrial efficiency, and identifies operational problems early. Furthermore, it contributes to faster and more assertive decision-making, ensuring greater operational safety.
Incentives and Compliance
Companies that adopt CEMS can participate in the carbon credit market and obtain certifications such as ISO 14000. Consequently, they reinforce their commitment to sustainable practices and gain a competitive advantage. For example, this facilitates access to new markets and strategic partnerships.
Market tendencies
There's a growing trend toward requiring continuous monitoring in all industrial processes, regardless of emission levels. This makes oversight more efficient and environmental goals easier to achieve. Therefore, investing in this technology today can represent a strategic advantage in the future.
Continuous Emissions Monitoring Systems are more than a legal requirement: they are strategic tools for industrial efficiency and environmental preservation. Therefore, standardizing regulations in Brazil and expanding the adoption of these technologies is essential to ensuring a sustainable future.
Want to know more about CEMS? Contact us with our experts and discover how to implement the ideal solution for your company.
Bibliography
Technical Standards and Regulations:
- EPA: 40CFR60, 40CFR65, 40CFR75 and appendices.
- ISO: 7935, 6879, 9169, 10155, 10396, 10849, 12039, 14164.
- ISO/IEC 17025.
- BS EN 45001.
- CONAMA Resolution No. 8/1990.
Legislation and Official Documents:
- Environmental Legislation – Public Prosecutor’s Office – Environment – Public Ministry of the State of São Paulo, Official Press, São Paulo, 2000.
- Denardi, Estefânia Prezutti. Legal aspects of the Kyoto Treaty.
- Frangetto, FW; Gazani, FR Legal Viability of the Clean Development Mechanism (CDM) in Brazil: The Kyoto Protocol and International Cooperation. New York: Oxford University Press, 2002, p.
- Araujo, N. Private International Law: Brazilian Theory and Practice – according to the New Civil Code. Rio de Janeiro: Renovar, 2003, p. 27.
- Dolinger, J. Private International Law. General Part. 6th ed. Rio de Janeiro: Renovar, 2002.
- Soares, GFS International Environmental Law: Emergencies, Obligations and Responsibilities. São Paulo: Editora Atlas, 2003.
- Belmiro, TR The Evolution of the Global Carbon Market.
Technical Guides and Procedures:
- Guidance on the Acceptance of German Type Approval Test Reports for CEMS.
- Procedures and General Requirements for the Compliance Testing of Continuous Emission Monitoring Systems – The Environmental Agency's Monitoring Certification Scheme (MCERTS), Version 2, Revision 1, April 2003 – UK.
Articles and Projects:
- Cotta, Michele Karina et al. Clean Development Mechanism Projects in Brazil. UNICAMP.
Continuous Emission Monitoring Systems (CEMS):
- Fuji CEMS Continuous Emissions Monitoring System: simultaneous monitoring of up to 14 components in flue gases, including CO, CO₂, NOx, N₂O, NH₃, HCl, CH₄, O₂ and H₂O, applicable to fossil fuels, industrial processes and waste incineration.
- Alutal / Fuji Electric Solution.
- Continuous Emissions Monitoring System (CEMS) Alutal / Fuji Electric: technology for real-time measurement of polluting gases in industrial boilers, cogeneration, power and thermal plants.
